A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete. Script: http://toolbar.static.zynga.com/js/jquery-1.4.2.min.js?114:116 Why is this happening????

Everytime I use facebook this comes up and I have to close the programme very annoying. A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete. Script: http://toolbar.static.zynga.com/js/jquery-1.4.2.min.js?114:116